Importance

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Abstract

An extended-nip press is disclosed comprising a press roll (2) and a backing roll (1), wherein the press roll (2) comprises a rotating endless-loop blanket (3) of a flexible, liquid-impervious material, a rigid and advantageously stationary roll support beam (4) that extends axially through the interior of the endless blanket (3), at least one shoe element (8) resting on the roll support beam (4) and having a concave top face, and loading means (6) for loading the shoe element (8) by way of pressing the concave top face thereof against the flexible endless-loop blanket (3) so as to make the blanket (3) form a press nip zone (N) in cooperation with the backing roll (1), said loading means (6) comprising a linear array of loading units (6') aligned along the axial direction of the press roll (2), each one of the loading units comprising a functionally cooperating piston-cylinder unit. The invention is implemented by way of providing the piston (13) of said at least one piston-cylinder unit with a first end (14) which is adapted to enter at least partially into the bore of the cylinder (12) and to tilt relative to the cylinder (12) and, further, by providing said piston (13) of said at least one piston-cylinder unit with a second end (18) which is adapted to enter the piston mount (19) and to tilt relative to the piston mount, and, still further, by adapting the cylinder (12) of said at least one piston-cylinder movable between glide rails (21) aligned in the axial direction of the press roll (2) and is connected so as to load the endless-loop blanket (3) when a pressurized medium is introduced into the cylinder displacement space (15) formed between the piston (13) and the cylinder (12).

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First Claim